Hi All,
We just released a "Bootstrap Elements" plugin based on Label to allow users to easily add Toggle / Modal to a course page. Its minimal at the moment but will be built out over time.
https://moodle.org/plugins/view.php?plugin=mod_bootstrapelements
The reason I am mentioning this in the themes forum is that the plugin is dependent on elements being supported by the sites theme (obviously).
So far we have only tested this with our own theme and Essential, but if anyone wants to test it with other likely candidates let us know and we will add those themes to a list of compatible themes in the plugin page.